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000078310 0247_ $$2doi$$a10.7566/JPSJ.87.034701
000078310 0248_ $$2sideral$$a104656
000078310 037__ $$aART-2018-104656
000078310 041__ $$aeng
000078310 100__ $$aHsu, H.C.
000078310 245__ $$aConductance fluctuations in disordered 2D topological insulator wires: From quantum spin-hall to ordinary phases
000078310 260__ $$c2018
000078310 5060_ $$aAccess copy available to the general public$$fUnrestricted
000078310 5203_ $$aImpurities and defects are ubiquitous in topological insulators (TIs) and thus understanding the effects of disorder on electronic transport is important. We calculate the distribution of the random conductance fluctuations P(G) of disordered 2D TI wires modeled by the Bernevig-Hughes-Zhang (BHZ) Hamiltonian with realistic parameters. As we show, the disorder drives the TIs into different regimes: metal (M), quantum spin-Hall insulator (QSHI), and ordinary insulator (OI). By varying the disorder strength and Fermi energy, we calculate analytically and numerically P(G) across the entire phase diagram. The conductance fluctuations follow the statistics of the unitary universality class ß = 2. At strong disorder and high energy, however, the size of the fluctuations dG reaches the universal value of the orthogonal symmetry class (ß = 1). At the QSHI-M and QSHI-OI crossovers, the interplay between edge and bulk states plays a key role in the statistical properties of the conductance.
000078310 536__ $$9info:eu-repo/grantAgreement/ES/MCIU/Subprograma Estatal de Movilidad 2013–2016-PRX16-00166$$9info:eu-repo/grantAgreement/ES/MINECO/FIS2015-65078-C2-2-P
000078310 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000078310 590__ $$a1.57$$b2018
000078310 591__ $$aPHYSICS, MULTIDISCIPLINARY$$b42 / 81 = 0.519$$c2018$$dQ3$$eT2
000078310 592__ $$a0.588$$b2018
000078310 593__ $$aPhysics and Astronomy (miscellaneous)$$c2018$$dQ2
000078310 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000078310 700__ $$aKleftogiannis, I.
000078310 700__ $$aGuo, G.Y.
000078310 700__ $$0(orcid)0000-0002-8726-7212$$aGopar, V.A.$$uUniversidad de Zaragoza
000078310 7102_ $$12004$$2405$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Teórica
000078310 773__ $$g87, 3 (2018), 034701 [6 pp]$$pJ. Phys. Soc. Jpn.$$tJOURNAL OF THE PHYSICAL SOCIETY OF JAPAN$$x0031-9015
000078310 8564_ $$s212229$$uhttps://zaguan.unizar.es/record/78310/files/texto_completo.pdf$$yPostprint
000078310 8564_ $$s89647$$uhttps://zaguan.unizar.es/record/78310/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000078310 909CO $$ooai:zaguan.unizar.es:78310$$particulos$$pdriver
000078310 951__ $$a2020-01-03-14:01:10
000078310 980__ $$aARTICLE